Pump pipe energy dissipation and vibration reduction device for overwater construction

Abstract

The invention discloses an overwater construction pump pipe energy dissipation and vibration reduction device which comprises a rigid outer sleeve assembly arranged on the outer side of an inner pump pipe. The core vibration reduction assembly is arranged between the rigid outer sleeve assembly and the outer wall of the inner pump pipe; and the outwards-raised end plates are connected with the rigid outer sleeve assemblies on the outer sides of the multiple adjacent inner pump pipes and connected with the fixing parts through the composite fastening assemblies, and axial fixing of the rigid outer sleeve assemblies is achieved. The rigid outer sleeve assembly comprises an outer sleeve circular steel pipe, the outer sleeve circular steel pipe is arranged on the outer side of the inner pump pipe in a sleeving mode, and pipe opening sealing end plates and the outwards-protruding end plates extending outwards in the radial direction are welded to end openings of the two ends of the outer sleeve circular steel pipe correspondingly. The core vibration reduction assembly is arranged between the inner wall of the outer sleeve round steel pipe and the outer wall of the inner pump pipe. The pump pipe energy dissipation and vibration reduction device for overwater construction aims at overcoming existing defects, and the safety and the construction efficiency of overwater concrete pumping operation are remarkably improved.

Description

Technical Field

[0001] This invention relates to an energy dissipation and vibration reduction device for pump pipes used in underwater construction. Background Technology

[0002] In marine engineering construction, especially in operations involving concrete pumping at docks, cross-sea bridges, and offshore platforms, concrete delivery pump pipes play a crucial role. Due to the special operating environment, the pump pipe system not only withstands the periodic pulsating pressure and impact generated during internal concrete transportation, but also continuously experiences complex dynamic loads caused by external wave fluctuations and ship disturbances. If these vibrations and impacts are not effectively controlled, they can easily lead to loosening of pump pipe connections, seal failure, and even fatigue cracking of the pipes and damage to the supporting structure, seriously affecting construction safety, concrete pouring quality, and equipment lifespan.

[0003] To address pipeline vibration reduction, various general solutions have been proposed in existing technologies. Common practices include adding vibration isolation elements such as rubber pads, spring supports, or hydraulic dampers at pipeline supports to absorb some vibration energy. For example, some devices use a simple rubber pad placed between the pipe clamp and the supporting structure, utilizing the elastic deformation of the rubber to provide some buffering. However, under harsh conditions such as high-frequency, multi-directional, and impact-laden construction on water, ordinary rubber pads are prone to rapid failure due to fatigue, aging, or permanent compression deformation, making the vibration reduction effect unsustainable. Furthermore, traditional rigid bolt connections are prone to stress concentration under dynamic loads, leading to bolt preload relaxation, further weakening the reliability of the connection, and potentially causing leakage or structural instability.

[0004] Some improved technologies attempt to introduce multiple locking or composite padding structures. For example, using spring washers, plastic gaskets, or double nuts to prevent loosening, or adding flexible contact elements such as wire mesh at bolt connections to improve stress distribution. However, such designs are often structurally dispersed and lack coordination. When faced with the coupling effect of low-frequency large-amplitude swaying and high-frequency vibration unique to underwater construction, their overall energy dissipation efficiency is limited, and installation and adjustment are complex, making it difficult to adapt to the constantly changing stress state of the pump pipe system in waves. In particular, how to achieve efficient, durable, and easy-to-maintain energy dissipation and vibration reduction at key connection nodes between pump pipes and between pipe sections and supporting structures remains a challenge in current underwater construction technology.

[0005] Therefore, an energy dissipation and vibration reduction device for pump pipes used in water construction is proposed to address the above problems. Summary of the Invention

[0006] The purpose of this invention is to overcome the existing defects and provide an energy dissipation and vibration reduction device for water-based construction pump pipes, which significantly improves the safety and construction efficiency of water-based concrete pumping operations.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an energy dissipation and vibration reduction device for a pump pipe used in underwater construction, comprising: A rigid outer casing assembly is installed on the outside of the inner pump pipe; The core vibration damping component is disposed between the rigid outer sleeve component and the outer wall of the inner pump pipe; The cantilever end plate connects to the rigid outer casing assembly of multiple adjacent inner pump pipes, and is connected via... The composite fastening assembly connects and fixes the components, achieving axial fixation of the rigid outer casing assembly.

[0008] Preferably, the rigid jacket assembly includes: An outer round steel pipe is fitted around the outside of the inner pump pipe. A pipe sealing end plate and a radially outwardly extending cantilever end plate are welded to the two ends of the outer round steel pipe, respectively. The core vibration damping component is disposed between the inner wall of the outer round steel pipe and the outer wall of the inner pump pipe.

[0009] Preferably, the core vibration damping component includes: Multiple steel springs are arranged equidistantly along the axial direction of the inner pump tube. The two ends of each steel spring are respectively connected to the inner wall of the outer circular steel tube and the outer wall of the inner pump tube through a positioning structure. The axis of each steel spring is perpendicular to the axis of the inner pump tube.

[0010] Preferably, the composite fastening assembly includes: Multiple internal threaded bolts are provided, and multiple external threaded holes are evenly distributed circumferentially on the side wall of the outer round steel tube. The internal threaded bolts pass through the cantilever end plate and connect to the external threaded holes to provide axial fixation for the outer round steel tube.

[0011] Preferably, the composite fastening assembly further includes: High-strength bolts are used to connect the cantilevered end plate to the external fixing components, providing axial fixation for the outer round steel tube.

[0012] Preferred options also include: A sealing rubber pad is placed between the high-strength bolt and the cantilever end plate to absorb high-frequency micro-vibrations.

[0013] Preferably, the spaces between the plurality of said steel spring arrays are filled with a viscoelastic damping material for dissipating vibrational energy and suppressing resonance.

[0014] Preferably, the viscoelastic damping material is polyurethane foam or rubber particles.

[0015] Preferably, the outer surface of the outer round steel tube is coated with a heavy-duty anti-corrosion coating adapted to the high-salt and high-humidity marine environment.

[0016] Preferred options also include: Internal screws are used to fix internal accessories or sensors inside the inner pump tube. External threaded bolts are fixed to the outside of the inner pump pipe and are used to connect external auxiliary brackets or sensor mounting bases.

[0017] Compared with existing technologies, the beneficial effects of this invention are as follows: This energy dissipation and vibration reduction device for pump pipes used in waterborne construction utilizes a combination design of steel springs and sealing rubber pads. The steel springs are evenly distributed axially and radially supported between the inner and outer pipes. Combined with the buffering effect of the sealing rubber pads at the bolt holes, it can efficiently dissipate the combined impact energy of axial pumping pulses and lateral swaying, effectively mitigating multi-directional vibrations caused by fluid pulsation and wave impacts, preventing pump pipe displacement, wear, and loosening of joints, and significantly improving the operational stability of the pumping system. It can effectively isolate and attenuate the combined vibrations experienced by the pump pipe system during waterborne construction, significantly improving the safety of pumping operations and the service life of the pipeline.

[0018] By adopting a double-fastening structure of cantilever end plates, high-strength bolts and internal threaded bolts, with high-strength bolts equipped with anti-loosening nuts and internal threaded bolts that can radially tighten the inner pump pipe, the double constraint ensures that the connection node is stable and sealed under long-term dynamic load, which solves the problem of conventional bolts being easy to loosen and seal failure. At the same time, it is easy to disassemble and assemble, and is suitable for complex working conditions of water construction. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the energy dissipation and vibration reduction device for pump pipes used in water construction according to the present invention; Figure 2 This is a schematic diagram of the structural connection between adjacent pump pipes of the energy dissipation and vibration reduction device for waterborne construction pump pipes according to the present invention; Figure 3 This is a schematic diagram showing the structure of adjacent pump pipes of the energy dissipation and vibration reduction device for water construction pump pipes of the present invention, without connection.

[0020] In the diagram: 1. Outer round steel pipe; 2. Inner pump pipe; 3. Steel spring; 4. Outer cantilever end plate; 5. Internal threaded bolt; 6. External threaded hole; 7. Sealing rubber gasket; 8. High-strength bolt. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figure 1-3 As shown, a waterborne construction pump pipe energy dissipation and vibration reduction device includes: a rigid outer sleeve assembly disposed on the outside of the inner pump pipe 2; a core vibration reduction assembly disposed between the rigid outer sleeve assembly and the outer wall of the inner pump pipe 2; and an outwardly projecting end plate 4 connecting multiple adjacent rigid outer sleeve assemblies on the outside of the inner pump pipe 2, and via... The composite fastening assembly connects and fixes the components, achieving axial fixation of the rigid outer casing assembly.

[0023] Specifically, the rigid outer casing assembly includes: an outer circular steel pipe 1, which is a thick-walled metal circular pipe. The inner diameter of the outer circular steel pipe 1 is larger than the outer diameter of the inner pump pipe 2 to be protected, forming an annular space between them for arranging the core vibration damping assembly. The outer surface of the outer circular steel pipe 1 is coated with a heavy-duty anti-corrosion coating adapted to the high-salt and high-humidity marine environment.

[0024] Specifically, the outer round steel pipe 1 is set outside the inner pump pipe 2, and the two ends of the outer round steel pipe 1 are respectively welded with pipe sealing end plates and radially outward extending cantilever end plates 4; the core vibration damping component is set between the inner wall of the outer round steel pipe 1 and the outer wall of the inner pump pipe 2.

[0025] Specifically, the core vibration damping component includes: multiple steel springs 3, which are arranged equidistantly along the axial direction of the inner pump pipe 2. The two ends of each steel spring 3 are respectively connected to the inner wall of the outer round steel pipe 1 and the outer wall of the inner pump pipe 2 through a positioning structure. The axis of each steel spring 3 is perpendicular to the axis of the inner pump pipe 2.

[0026] Specifically, viscoelastic damping material is filled between multiple arrays of steel springs to dissipate vibrational energy and suppress resonance. The viscoelastic damping material is polyurethane foam or rubber particles.

[0027] In another embodiment, the steel spring 3 may be welded or snapped with special pads at both ends, and a thin rubber sheet may be placed between the pads and the tube wall to disperse stress and form a radial elastic support array.

[0028] Specifically, the composite fastening assembly includes: multiple internal threaded bolts 5, multiple external threaded holes 6 evenly distributed circumferentially on the side wall of the outer round steel tube 1, and the internal threaded bolts 5 passing through the cantilever end plate 4 and connecting to the external threaded holes 6 to provide axial fixation for the outer round steel tube 1.

[0029] Specifically, the internal threaded bolt 5 is a standard cylindrical screw, which is screwed into the external threaded hole 6 on the wall of the outer round steel pipe 1. The front end can be pressed against the outer wall of the inner pump pipe 2 or the intermediate buffer sleeve to provide adjustable radial auxiliary clamping.

[0030] Specifically, the internal threaded bolt 5 is connected by a loose nut. The anti-loosening nut is a double nut structure or a nut with a built-in locking washer, which is installed on the threaded end of the internal threaded bolt 5 to ensure that the threaded connection does not loosen under vibration.

[0031] Specifically, the composite fastening assembly also includes: high-strength bolts 8, and the cantilever end plate 4 is connected to the external fixing component through the high-strength bolts 8 to provide axial fixation for the outer round steel tube 1.

[0032] Specifically, the high-strength bolt 8 is connected by a loose nut. The anti-loosening nut is a double nut structure or a nut with a built-in locking washer, which is installed on the threaded end of the high-strength bolt 8 to ensure that the threaded connection does not loosen under vibration.

[0033] Specifically, it also includes: a sealing rubber pad 7, which is placed between the high-strength bolt 8 and the cantilever end plate 4 to absorb high-frequency micro-vibrations.

[0034] Specifically, it also includes: internal screws, fixed inside the inner pump tube 2, used to fix internal accessories or sensors; and external threaded bolts, fixed outside the inner pump tube 2, used to connect external auxiliary brackets or sensor mounting bases.

[0035] During installation, the inner pump pipe 2 is first inserted into the annular space of the outer round steel pipe 1, ensuring that the steel spring 3 is evenly fitted between the outer wall of the inner pump pipe 2 and the inner wall of the outer round steel pipe 1, thus completing the initial positioning of the core vibration damping component. Then, the internally threaded bolts 5 are screwed into the externally threaded holes 6 and gradually tightened until they press against the outer wall of the inner pump pipe 2, achieving radial auxiliary fixation. The circumferentially distributed internally threaded bolts 5 ensure balanced force distribution on the inner pump pipe 2. Next, a sealing rubber pad 7 is sandwiched between the cantilevered end plates 4 of adjacent pump pipes. High-strength bolts 8 are passed through the first bolt through-hole of the cantilevered end plate 4 and tightened, then secured with anti-loosening nuts to complete axial fixation and end-face sealing, forming a double-fastening structure.

[0036] During construction, when the inner pump pipe 2 is subjected to axial pulse impacts generated by concrete pumping, the steel spring 3 absorbs the impact energy through axial elastic deformation. Facing lateral swaying caused by waves, the radial support of the steel spring 3 works in conjunction with the energy dissipation characteristics of the damping material to attenuate lateral vibrations. The sealing rubber pad 7 continuously absorbs high-frequency micro-vibrations, preventing stress concentration at bolt connections. The double-fastening structure, combined with the anti-loosening nut, effectively prevents bolt preload loosening under dynamic loads. The multi-seal design ensures end-face sealing, and the anti-corrosion coating extends the service life of the device in harsh environments. Overall, it achieves a comprehensive effect of multi-directional vibration reduction, stable fixation, and long-term protection.

[0037] This energy dissipation and vibration reduction device for pump pipes used in underwater construction constructs a comprehensive vibration reduction system integrating radial elastic support (steel springs), high-frequency absorption (sealing rubber pads), multi-directional rigid restraint (composite fastening components), and long-term anti-loosening. The steel springs 3 primarily handle low-frequency large-amplitude swaying and axial impact, while the sealing rubber pads 7 address high-frequency vibrations and localized stresses. The composite fastening network, consisting of high-strength bolts 8 and internally threaded bolts 5, provides a stable connection and also contributes to energy dissipation through friction and slight deformation. This device effectively isolates and attenuates the composite vibrations experienced by the pump pipe system during underwater construction, significantly improving the safety of pumping operations and extending the pipeline's service life.

[0038] This energy dissipation and vibration reduction device for waterborne construction pump pipes utilizes a combination design of steel springs 3 and sealing rubber pads 7. The steel springs 3 are evenly distributed along the axial direction and radially supported between the inner and outer pipes. Combined with the buffering effect of the sealing rubber pads 7 at the bolt holes, it can efficiently dissipate the combined impact energy of axial pumping pulses and lateral swaying, effectively alleviate multi-directional vibrations caused by fluid pulsation and wave impacts, prevent pump pipe displacement, wear, and joint loosening, and significantly improve the operational stability of the pumping system.

[0039] By adopting a double fastening structure consisting of an outward-cantilevered end plate 4, high-strength bolts 8, and internally threaded bolts 5, with high-strength bolts 8 equipped with anti-loosening nuts and internally threaded bolts 5 radially tightening the inner pump pipe 2, the double constraint ensures that the connection node is stable and sealed under long-term dynamic loads, solving the problem of conventional bolts being easy to loosen and the seal failing. At the same time, it is easy to disassemble and assemble, and is suitable for complex working conditions in water construction.

[0040] The damping material filling the annular space and the anti-corrosion coating on the outer surface of the outer round steel pipe further enhance the energy dissipation and vibration reduction effect, extend the service life of the device in humid salt spray environments, and the overall structure is compact and highly integrated, which can adapt to the combined displacement of axial expansion and contraction and radial swing of the pump pipe, greatly improving the safety, construction efficiency and concrete pouring quality of concrete pumping operations on water.

[0041] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A waterborne construction pump pipe energy dissipation and vibration reduction device, characterized in that, include: A rigid outer casing assembly is installed on the outside of the inner pump pipe (2); The core vibration damping component is disposed between the rigid outer sleeve component and the outer wall of the inner pump pipe (2); The cantilever end plate (4) connects to the rigid outer sleeve assembly on the outside of multiple adjacent inner pump pipes (2), and is connected via... The composite fastening assembly connects and fixes the components, achieving axial fixation of the rigid outer casing assembly.

2. The energy dissipation and vibration reduction device for waterborne construction pump pipes according to claim 1, characterized in that, The rigid outer casing assembly includes: The outer round steel pipe (1) is fitted outside the inner pump pipe (2). The two ends of the outer round steel pipe (1) are respectively welded with pipe sealing end plates and radially outward extending cantilever end plates (4). The core vibration damping component is disposed between the inner wall of the outer round steel pipe (1) and the outer wall of the inner pump pipe (2).

3. The energy dissipation and vibration reduction device for waterborne construction pump pipes according to claim 2, characterized in that, The core vibration damping component includes: Multiple steel springs (3) are arranged equidistantly along the axial direction of the inner pump tube (2). The two ends of each steel spring (3) are respectively connected to the inner wall of the outer round steel tube (1) and the outer wall of the inner pump tube (2) through a positioning structure. The axis of each steel spring (3) is perpendicular to the axis of the inner pump tube (2).

4. The energy dissipation and vibration reduction device for waterborne construction pump pipes according to claim 2, characterized in that, The composite fastening assembly includes: Multiple internal threaded bolts (5) are provided. Multiple external threaded holes (6) are evenly distributed around the port sidewall of the outer round steel tube (1). The internal threaded bolts (5) pass through the cantilever end plate (4) and connect to the external threaded holes (6) to provide axial fixation for the outer round steel tube (1).

5. The energy dissipation and vibration reduction device for waterborne construction pump pipes according to claim 4, characterized in that, The composite fastening assembly also includes: High-strength bolts (8) are used to connect the cantilever end plate (4) to the external fixing components, providing axial fixation for the outer round steel pipe (1).

6. The energy dissipation and vibration reduction device for waterborne construction pump pipes according to claim 5, characterized in that, Also includes: A sealing rubber pad (7) is placed between the high-strength bolt (8) and the cantilever end plate (4) to absorb high-frequency micro-vibrations.

7. The energy dissipation and vibration reduction device for waterborne construction pump pipes according to claim 3, characterized in that, The spaces between the arrays of the multiple steel springs (3) are filled with a viscoelastic damping material for dissipating vibrational energy and suppressing resonance.

8. The energy dissipation and vibration reduction device for waterborne construction pump pipes according to claim 7, characterized in that, The viscoelastic damping material is polyurethane foam or rubber particles.

9. The energy dissipation and vibration reduction device for waterborne construction pump pipes according to claim 2, characterized in that, The outer surface of the outer round steel pipe (1) is coated with a heavy-duty anti-corrosion coating adapted to the high-salt and high-humidity marine environment.

10. The energy dissipation and vibration reduction device for waterborne construction pump pipes according to claim 1, characterized in that, Also includes: An internal screw is fixed inside the inner pump tube (2) to fix internal accessories or sensors; External threaded bolts are fixed to the outside of the inner pump tube (2) to connect to external auxiliary brackets or sensor mounting bases.

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